A great place to start is The Bedford Sportsman - a flyshop in Bedford. Not sure of the phone number, but they do have a website.
Every Spring it seems they do a "drive around" class - where they take attendees to the local streams, show them the ropes, etc. And they always have lectures, in general.
The owner, Charlie, is a nice guy.
I would go there, chew the fat, and see when that lecture is. (It seems they have it every early Spring.....March, April).
Fly fishing right now would tough. I am sure the fish are just hugging the bottom at the East Branch, and trying it now might just discourage you. Better to give it a shot in April or May, when some serious hatches start.
Good luck.